Influence of single-sided deafness on the auditory capacity of the better-hearing ear

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

DRKS

Registry ID

DRKS00015740

Enrollment

400

Registered

2018-10-22

Start date

2018-10-22

Completion date

Unknown

Last updated

2025-04-07

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

H90.4

Interventions

Group 1: The study population consists of unilaterally severely hearing impaired to deaf and on the contralateral normal-hearing or near normal-hearing patients. The tone audiograms (500Hz, 1kHz, 2kH

Eligibility

Sex/Gender

All

Age

18 Years to No maximum

Inclusion criteria

Inclusion criteria: Hearing capacity of the poorer ear unaided - mean air conduction hearing threshold (500, 1000, 2000, 4000 Hz) > 60 dB HL - Speech comprehension without CI in the Freiburg Einsilbertest = 30% at 65 dB SPL Hearing capacity of the better ear at first diagnosis - Average air conduction hearing threshold (500, 1000, 2000, 4000 Hz) = 30 dB HL

Exclusion criteria

Exclusion criteria: Single-sided deaf patients under 18 years

Design outcomes

Primary

Measure	Time frame
Comparison of peripheral hearing ability of the better-hearing ear in single-sided deaf patients with age-related normal-hearing subjects from literature (ISO 7029:2017).	—

Secondary

Measure	Time frame
Comparison of hearing ability of better-hearing ear of single-sided deaf patients with and without cochlear implantation of deaf ear Comparison of the hearing ability of the better-hearing ear of single-sided deaf patients with different etiology of hearing impairment (e.g. otosclerosis, temporal bone fracture, sudden deafness) Comparison of the hearing ability of the better-hearing ear of single-sided deaf patients with different duration of hearing impairment.	—

Measure

Time frame

Comparison of hearing ability of better-hearing ear of single-sided deaf patients with and without cochlear implantation of deaf ear Comparison of the hearing ability of the better-hearing ear of single-sided deaf patients with different etiology of hearing impairment (e.g. otosclerosis, temporal bone fracture, sudden deafness) Comparison of the hearing ability of the better-hearing ear of single-sided deaf patients with different duration of hearing impairment.

—

Countries

Germany

Contacts

Public ContactIva Speck

HNO-Uniklinik Freiburg

iva.speck@uniklinik-freiburg.de0761/270-41964

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Feb 4, 2026